(1996). Vol. 94, № 38; OiL and Gas journal. 1996.
Lua i Stíl Chicago (17ú heag.)Vol. 94, № 38; OiL and Gas Journal. 1996, 1996.
Lua MLA (9ú heag.)Vol. 94, № 38; OiL and Gas Journal. 1996, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.